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21
Normal Sounds
• High Pitched Chatter - High efficiency compressors may have a high pitched chatter during
the cooling cycle.
• Sound of Rushing Air - At the front of the unit, you may hear the sound of rushing air being
moved by the fan.
• Gurgle/Hiss - Gurgling or hissing noises may be caused by refrigerant passing through the
evaporator during normal operation.
• Vibration - The unit may vibrate and make noise because of poor wall or window construction
or incorrect installation.
• Splashing, Pinging or Switching - Droplets of water hitting the condenser or condenser fan
during normal operation may cause these sounds.
Energy Saving Guide
Read and follow the guide below to get the best performance and efficiency from your air
conditioner:
• Do not cover the air outlet (exhaust) while in use.
• Use the timer to operate the unit before it is needed. For example, set the timer to turn on the
unit in cooling mode for 3 or more hours to cool the room before you arrive. You may want to
operate the unit all day if you live in a warmer climate.
• Minimize the heat sources (direct sunlight, computers, servers, people, etc.) in the room.
• Close all windows and doors.
• Use the unit in a contained room. For example, a room with four walls and a ceiling, instead of
a partitioned studio, or warehouse.
• Make sure the unit is secure with no gaps where air can escape.
• Minimize the amount of humidity in the room. For example, run the unit as a dehumidifier.
• To prolong the compressor's life, please wait at least 3 minutes before turning the unit back
on after shutting it off.
• Inspect and keep the air filters clean by cleaning regularly.
• Perform routine maintenance.
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